[MRCA] IN-106A antenna base for the SCR-284 - What the heck?

[MKDORNEY at aol.com]

MS 55 and MS 56 can still be had in Europe, but they are getting harder to  
come by.  I got one of each for my BC-654 last year, one from a seller in  
Italy, another from France, and I think I paid around $100.00 total.   
Vintage vehicle suppliers are also a place to look now, since more and more of  
those guys are getting radios for their vehicles.  I'm also surprised that  
nobody has started to reproduce these antenna sections.  The construction  
looks to be pretty straight forward.
 
If you're actually going to work your BC-654, and can't find the mast  
sections you're looking for, get yourself an IN-127 (ground mount) or a AB-65  
(vehicle mount) from a BC-1306 and 7 sections of the antenna masts that go 
with  it ( vehicle mount was a 15 ft antenna, ground mount was a 25 foot 
antenna  ).  I have known some who have used the AB-15 antenna base for the 15 ft 
 vehicle antenna, but there is a question about the strength of the spring 
in  this antenna base, so stick with an AB-65.  While they are getting 
harder  to find, the mast sections that go with the IN-127 and AB-65 are a lot  
easier to get that MS 55 and MS 56 ( that go with mast bases like the  
MP-48-A).  For most of WW2, the IN-127 was molded in brown plastic, but  very late 
(late 1945) and post war IN-127 were molded in black plastic, and are  
readily available.  Or go with the long wire AN-130 that came with the  BC-1306, 
or make your own long wire antenna - there are instructions for making  
this antenna in the manual your BC-654 you can get from Mr Downs.
 
Mark D.
WW2RDO
 
 
In a message dated 6/23/2017 2:02:34 A.M. Eastern Daylight Time,  
duvallddennis at gmail.com writes:

OK…  We can always count on Robert to step in set the detail record 
straight.   


DD, W7QHO


*******************


On Jun 22, 2017, at 9:24 PM, WA5CAB--- via MRCA <_mrca at mailman.qth.net_ 
(mailto:mrca at mailman.qth.net) >  wrote:

MS-55 through MS-49 were originally used with SCR-178,  SCR-179 and SCR-203.

MS-55 is as rare as MS-56 (or actually I guess  rarer, as I sold out of 
MS-55 in 2011 but still have two MS-56  available).  Also have IN-106's.

In a message dated 06/22/2017  21:44:53 PM Central Daylight Time, 
_duvallddennis at gmail.com_ (mailto:duvallddennis at gmail.com)  writes:  

Garret,


The two bottom sectors  of the SCR-284  “rod” antenna, MS-56 and MS-55 are 
unique to the SCR-284.  The bottom  section, MS-56 has a smooth cylindrical 
bottom end that fits into the  1N-106A.  The top end of MS-56 mates with 
the bottom end of   MS-55, the top end of which mates with “standard” section 
MS-54 and so on  up through MS-55, MS-54,  MS-53, MS-52………….MS-49 (top  
section).

MS-56 (bottom) sections are now extremely rare, the last  one I saw on eBay 
went for $500!  Better start thinking about some  kind of adapter.  Got a 
machinist friend?


Dennis  DuVall,W7QHO
Glendale, ca


**********************


On Jun 22, 2017, at 5:05 PM, Garret Scott <_scottgs at bellsouth.net_ 
(mailto:scottgs at bellsouth.net) >  wrote:

I acquired a NOS IN-106A base, for the SCR-284 (BC-654).  This is the old 
original style with the large ceramic insulator.  

But…  I don’t understand how the MS-56 antenna section  attaches.  There 
are no threads in the base!!!

I’ve studied  TM 11-275, and I just don’t get it. 

Can anyone help me regain  sanity?  

Thanks,
Garret
W8BUG











Robert  & Susan Downs - Houston
wa5cab dot com (Web Store)
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